General Information:

   - The "Check Engine" light is a crucial indicator on your vehicle's dashboard that signals potential issues with the engine or emissions system. When this light illuminates, it means the vehicle's onboard diagnostics system has detected a problem that requires attention.

How to Detect the Problem:

   - Dashboard Indicator: The most obvious sign is the "Check Engine" light itself. It can appear as a solid or flashing warning light, with the latter indicating a more urgent issue.

   - Performance Issues: You might notice reduced fuel efficiency, rough idling, or unusual engine sounds, which could accompany the illuminated warning light.

   - Other Warning Lights: Sometimes, other dashboard indicators may light up along with the Check Engine light, pointing to specific systems like the exhaust or transmission.

How the Problem is Diagnosed and Fixed:

   - Diagnosis: A mechanic uses a diagnostic scan tool to read the trouble codes stored in the vehicle's computer. These codes provide information about the nature of the problem.

   - Inspection and Repair: Based on the codes, the mechanic will inspect the affected areas, such as the engine, exhaust system, or sensors. The repairs might involve replacing faulty components, like oxygen sensors or spark plugs, or addressing issues with the catalytic converter, fuel system, or other parts.

   - Resetting the Light: After the issue is resolved, the mechanic will reset the Check Engine light and test the vehicle to ensure the problem has been fully addressed.

Duration of the Service:

   - The time required can vary widely depending on the nature of the issue. A basic diagnostic scan can take as little as 15-30 minutes, but additional time may be needed for repairs, which could range from an hour to a full day, depending on the complexity.

Frequency of Service:

   - There is no set schedule for checking the engine light; it should be addressed whenever it illuminates. Regular vehicle maintenance, including oil changes and emissions checks, can help prevent issues that trigger the Check Engine light.